Audio files I place in an InDesign 2015 document on my Win 8.1 PC and export to a reflowable epub (3.0) do NOT display in Kindle Previewer, Kindle for PC or in Nook. It works only in Adobe Digital Editions. I also exported the InDesign file to html as a test and the audio worked there as well. Can you tell me what might be causing this?
I'm moving this to the InDesign EPUB forum.